/**
 * VANTIX Tool #49 — Scoped Glassmorphic Stylesheet
 * Target: Client-Side Multi-Format File & Code Diff Visualizer
 * Scope: .diff-visualizer-app
 * Standards: Full VANTIX Design System Parity (Tools #40–48)
 * Anti-Collision: min-width: 0 on all flex/grid children, zero layout bleed, 320px responsive
 */

.diff-visualizer-app {
    --dva-bg-surface: rgba(15, 18, 26, 0.78);
    --dva-bg-surface-raised: rgba(255, 255, 255, 0.03);
    --dva-bg-card: rgba(18, 22, 31, 0.85);
    --dva-border: rgba(255, 255, 255, 0.09);
    --dva-border-hover: rgba(247, 183, 51, 0.35);
    --dva-gold: #F7B733;
    --dva-gold-dim: rgba(247, 183, 51, 0.14);
    --dva-emerald: #10b981;
    --dva-emerald-dark: #064e3b;
    --dva-emerald-dim: rgba(16, 185, 129, 0.12);
    --dva-cyan: #00e5ff;
    --dva-cyan-dim: rgba(0, 229, 255, 0.12);
    --dva-amber: #f59e0b;
    --dva-ruby: #ef4444;
    --dva-ruby-dim: rgba(239, 68, 68, 0.14);
    --dva-text-primary: #ffffff;
    --dva-text-secondary: #94a3b8;
    --dva-text-muted: #64748b;
    --dva-font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    font-family: Inter, system-ui, -apple-system, sans-serif;
    color: var(--dva-text-primary);
    line-height: 1.5;
    overflow-x: hidden;
}

.diff-visualizer-app *,
.diff-visualizer-app *::before,
.diff-visualizer-app *::after {
    box-sizing: border-box;
}

/* Base Glass Card Component */
.diff-visualizer-app .diff-card {
    background: var(--dva-bg-surface);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--dva-border);
    border-radius: 18px;
    padding: 1.25rem;
    box-shadow: 0 12px 32px -8px rgba(0, 0, 0, 0.35);
    width: 100%;
    max-width: 100%;
    min-width: 0;
    margin-bottom: 1.5rem;
    overflow: hidden;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.diff-visualizer-app .diff-card:hover {
    border-color: var(--dva-border-hover);
}

/* Header & Metadata */
.diff-visualizer-app .diff-header-card {
    padding: 1.25rem 1.5rem;
    margin-bottom: 1.25rem;
}

.diff-visualizer-app .diff-header-top-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
}

.diff-visualizer-app .diff-badge-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem;
    min-width: 0;
}

.diff-visualizer-app .diff-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.725rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    white-space: nowrap;
}

.diff-visualizer-app .diff-badge-gold {
    background: var(--dva-gold-dim);
    color: var(--dva-gold);
    border: 1px solid rgba(247, 183, 51, 0.3);
}

.diff-visualizer-app .diff-badge-emerald {
    background: var(--dva-emerald-dim);
    color: var(--dva-emerald);
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.diff-visualizer-app .diff-badge-cyan {
    background: var(--dva-cyan-dim);
    color: var(--dva-cyan);
    border: 1px solid rgba(0, 229, 255, 0.3);
}

.diff-visualizer-app .diff-pulse-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--dva-emerald);
    box-shadow: 0 0 8px var(--dva-emerald);
    animation: dvaPulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes dvaPulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.4; transform: scale(0.85); }
}

.diff-visualizer-app .diff-action-toolbar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.4rem;
}

.diff-visualizer-app .diff-btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.35rem 0.75rem;
    border-radius: 8px;
    font-size: 0.75rem;
    font-weight: 600;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.12);
    color: var(--dva-text-primary);
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.diff-visualizer-app .diff-btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--dva-gold);
    color: var(--dva-gold);
}

.diff-visualizer-app .diff-btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.35rem 0.85rem;
    border-radius: 8px;
    font-size: 0.75rem;
    font-weight: 700;
    background: var(--dva-gold);
    border: 1px solid var(--dva-gold);
    color: #000000;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 2px 8px rgba(247, 183, 51, 0.25);
    white-space: nowrap;
}

.diff-visualizer-app .diff-btn-primary:hover {
    background: #f59e0b;
    box-shadow: 0 4px 12px rgba(247, 183, 51, 0.4);
}

.diff-visualizer-app .diff-title {
    font-size: 1.65rem;
    font-weight: 800;
    letter-spacing: -0.025em;
    margin: 0 0 0.4rem 0;
    color: #ffffff;
    line-height: 1.25;
}

.diff-visualizer-app .diff-subtitle {
    font-size: 0.875rem;
    color: var(--dva-text-secondary);
    margin: 0;
    max-width: 920px;
    line-height: 1.55;
}

/* Toast Notifications */
.diff-visualizer-app .diff-toast {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1.15rem;
    border-radius: 12px;
    margin-bottom: 1.25rem;
    font-size: 0.825rem;
    background: rgba(16, 185, 129, 0.14);
    border: 1px solid rgba(16, 185, 129, 0.38);
    color: #d1fae5;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
}

.diff-visualizer-app .diff-toast.diff-toast-hidden {
    display: none;
}

/* Dynamic pSEO Persona Banner */
.diff-visualizer-app .diff-pseo-banner {
    background: linear-gradient(135deg, rgba(247, 183, 51, 0.12) 0%, rgba(18, 22, 31, 0.85) 100%);
    border: 1px solid rgba(247, 183, 51, 0.32);
    border-radius: 14px;
    padding: 0.85rem 1.25rem;
    margin-bottom: 1.25rem;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
}

.diff-visualizer-app .diff-pseo-tag {
    font-family: var(--dva-font-mono);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--dva-gold);
}

.diff-visualizer-app .diff-pseo-desc {
    font-size: 0.775rem;
    color: var(--dva-text-secondary);
    margin-top: 0.15rem;
}

/* 4-Card Unified KPI Ribbon */
.diff-visualizer-app .diff-kpi-ribbon-card {
    padding: 1rem 1.25rem;
    margin-bottom: 1.25rem;
}

.diff-visualizer-app .diff-kpi-strip {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1rem;
    align-items: stretch;
}

.diff-visualizer-app .diff-kpi-item {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    padding: 0.25rem 0.75rem;
    border-right: 1px solid rgba(255, 255, 255, 0.08);
    min-width: 0;
    overflow-wrap: break-word;
    word-break: break-word;
}

.diff-visualizer-app .diff-kpi-item:last-child {
    border-right: none;
}

.diff-visualizer-app .diff-kpi-label {
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--dva-text-muted);
    line-height: 1.3;
}

.diff-visualizer-app .diff-kpi-val {
    font-family: var(--dva-font-mono);
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--dva-text-primary);
    line-height: 1.2;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.diff-visualizer-app .diff-kpi-val.diff-highlight {
    color: var(--dva-gold);
}

.diff-visualizer-app .diff-kpi-val.diff-emerald,
.diff-visualizer-app .diff-emerald {
    color: var(--dva-emerald);
}

.diff-visualizer-app .diff-kpi-val.diff-ruby,
.diff-visualizer-app .diff-ruby {
    color: var(--dva-ruby);
}

.diff-visualizer-app .diff-kpi-val.diff-cyan,
.diff-visualizer-app .diff-cyan {
    color: var(--dva-cyan);
}

.diff-visualizer-app .diff-kpi-val.diff-amber,
.diff-visualizer-app .diff-amber {
    color: var(--dva-amber);
}

.diff-visualizer-app .diff-kpi-sub {
    font-size: 0.72rem;
    font-family: var(--dva-font-mono);
    color: var(--dva-text-secondary);
    line-height: 1.35;
}

/* Controls / Filter Bar */
.diff-visualizer-app .diff-controls-card {
    padding: 0.85rem 1.25rem;
    margin-bottom: 1.25rem;
}

.diff-visualizer-app .diff-controls-layout {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 0.85rem;
}

.diff-visualizer-app .diff-pill-group {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.35rem;
    min-width: 0;
}

.diff-visualizer-app .diff-group-label {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--dva-text-secondary);
    margin-right: 0.35rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.diff-visualizer-app .diff-pill-btn {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--dva-text-secondary);
    padding: 0.35rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.diff-visualizer-app .diff-pill-btn:hover {
    background: rgba(255, 255, 255, 0.09);
    color: #ffffff;
    border-color: rgba(255, 255, 255, 0.2);
}

.diff-visualizer-app .diff-pill-btn.is-active {
    background: var(--dva-gold);
    color: #000000;
    font-weight: 700;
    border-color: var(--dva-gold);
    box-shadow: 0 2px 8px rgba(247, 183, 51, 0.3);
}

.diff-visualizer-app .diff-toggle-wrapper {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    font-size: 0.775rem;
    color: var(--dva-text-secondary);
    cursor: pointer;
    user-select: none;
    font-weight: 500;
}

.diff-visualizer-app .diff-toggle-wrapper input {
    accent-color: var(--dva-gold);
    cursor: pointer;
}

/* Real-Time Interactive Diff Sliders */
.diff-visualizer-app .diff-sliders-strip {
    display: flex;
    gap: 1.5rem;
    align-items: center;
    flex-wrap: wrap;
    width: 100%;
    padding-top: 0.75rem;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    margin-top: 0.25rem;
}

.diff-visualizer-app .diff-slider-item {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    min-width: 180px;
    flex: 1;
}

.diff-visualizer-app .diff-slider-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.75rem;
}

.diff-visualizer-app .diff-slider-label {
    font-weight: 600;
    color: var(--dva-text-secondary);
}

.diff-visualizer-app .diff-slider-val {
    font-weight: 700;
    color: var(--dva-gold);
    font-family: var(--dva-font-mono);
    font-size: 0.75rem;
}

.diff-visualizer-app .diff-slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 6px;
    border-radius: 9999px;
    background: rgba(255, 255, 255, 0.1);
    outline: none;
    cursor: pointer;
    margin: 4px 0;
    box-sizing: border-box;
}

.diff-visualizer-app .diff-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--dva-gold);
    cursor: pointer;
    box-shadow: 0 0 10px rgba(247, 183, 51, 0.5);
    border: 2px solid rgba(15, 23, 42, 0.8);
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.diff-visualizer-app .diff-slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    box-shadow: 0 0 14px rgba(247, 183, 51, 0.8);
}

.diff-visualizer-app .diff-slider::-moz-range-thumb {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--dva-gold);
    cursor: pointer;
    box-shadow: 0 0 10px rgba(247, 183, 51, 0.5);
    border: 2px solid rgba(15, 23, 42, 0.8);
    transition: transform 0.15s ease;
}

.diff-visualizer-app .diff-slider::-moz-range-thumb:hover {
    transform: scale(1.2);
}

.diff-visualizer-app .diff-textarea,
.diff-visualizer-app .diff-code-cell,
.diff-visualizer-app .diff-patch-area {
    tab-size: var(--dva-tab-size, 2);
    -moz-tab-size: var(--dva-tab-size, 2);
}

/* 2-Column Responsive Input / Editor Grid */
.diff-visualizer-app .diff-workbench-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 1.25rem;
    align-items: stretch;
    margin-bottom: 1.5rem;
    width: 100%;
}

.diff-visualizer-app .diff-editor-card {
    display: flex;
    flex-direction: column;
    padding: 0;
    margin-bottom: 0;
    min-width: 0;
    overflow: hidden;
}

.diff-visualizer-app .diff-editor-header {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    background: rgba(0, 0, 0, 0.35);
    border-bottom: 1px solid var(--dva-border);
}

.diff-visualizer-app .diff-editor-title {
    font-size: 0.825rem;
    font-weight: 700;
    color: #ffffff;
    display: flex;
    align-items: center;
    gap: 0.45rem;
    margin: 0;
}

.diff-visualizer-app .diff-editor-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.35rem;
}

.diff-visualizer-app .diff-btn-xs {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.12);
    color: var(--dva-text-primary);
    padding: 0.25rem 0.55rem;
    border-radius: 6px;
    font-size: 0.72rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    white-space: nowrap;
}

.diff-visualizer-app .diff-btn-xs:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--dva-gold);
    border-color: var(--dva-gold);
}

.diff-visualizer-app .diff-dropzone {
    flex: 1;
    min-height: 280px;
    position: relative;
    background: rgba(10, 12, 16, 0.6);
    border: 2px dashed transparent;
    transition: border-color 0.2s ease, background 0.2s ease;
}

.diff-visualizer-app .diff-dropzone.is-dragover {
    border-color: var(--dva-gold);
    background: rgba(247, 183, 51, 0.08);
}

.diff-visualizer-app .diff-textarea {
    width: 100%;
    height: 100%;
    min-height: 280px;
    background: transparent;
    border: none;
    outline: none;
    padding: 1rem;
    color: #e5e7eb;
    font-family: var(--dva-font-mono);
    font-size: 0.825rem;
    line-height: 1.6;
    resize: vertical;
    box-sizing: border-box;
    white-space: pre;
    overflow-wrap: normal;
    overflow-x: auto;
}

.diff-visualizer-app .diff-editor-footer {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    padding: 0.45rem 1rem;
    background: rgba(0, 0, 0, 0.25);
    border-top: 1px solid var(--dva-border);
    font-size: 0.72rem;
    font-family: var(--dva-font-mono);
    color: var(--dva-text-secondary);
}

/* Dedicated Visual Diff Output Container Card */
.diff-visualizer-app .diff-output-card {
    padding: 0;
    overflow: hidden;
    margin-bottom: 1.5rem;
}

.diff-visualizer-app .diff-output-header {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    padding: 0.75rem 1.25rem;
    background: rgba(0, 0, 0, 0.45);
    border-bottom: 1px solid var(--dva-border);
}

.diff-visualizer-app .diff-output-title {
    font-size: 0.9rem;
    font-weight: 700;
    color: #ffffff;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.diff-visualizer-app .diff-view-mode-tabs {
    display: inline-flex;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 2px;
    gap: 2px;
}

.diff-visualizer-app .diff-tab-btn {
    background: transparent;
    border: none;
    color: var(--dva-text-secondary);
    padding: 0.25rem 0.65rem;
    border-radius: 6px;
    font-size: 0.725rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.diff-visualizer-app .diff-tab-btn.is-active {
    background: var(--dva-gold);
    color: #000000;
    font-weight: 700;
}

/* Diff Viewport & Coordinated Tables */
.diff-visualizer-app .diff-viewport {
    width: 100%;
    max-height: 600px;
    overflow-y: auto;
    overflow-x: auto;
    background: #090c10;
    font-family: var(--dva-font-mono);
    font-size: 0.8125rem;
    line-height: 1.5;
}

.diff-visualizer-app .diff-table {
    width: 100%;
    border-collapse: collapse;
    table-layout: fixed;
}

/* Split View Column Sizing */
.diff-visualizer-app .diff-table-split col.col-gutter { width: 50px; }
.diff-visualizer-app .diff-table-split col.col-code { width: calc(50% - 50px); }

/* Unified View Column Sizing */
.diff-visualizer-app .diff-table-unified col.col-gutter,
.diff-visualizer-app .diff-table-unified col.col-gutter-del,
.diff-visualizer-app .diff-table-unified col.col-gutter-add { width: 45px; }
.diff-visualizer-app .diff-table-unified col.col-marker { width: 24px; }
.diff-visualizer-app .diff-table-unified col.col-code-unified,
.diff-visualizer-app .diff-table-unified col.col-code-uni { width: calc(100% - 114px); }

.diff-visualizer-app .diff-empty-state {
    padding: 2.25rem 1.5rem;
    text-align: center;
    color: var(--dva-text-secondary);
    font-family: Inter, system-ui, -apple-system, sans-serif;
    font-size: 0.875rem;
    background: rgba(10, 12, 16, 0.65);
}

/* Row and Cell Styling */
.diff-visualizer-app .diff-tr {
    height: 22px;
}

.diff-visualizer-app .diff-gutter {
    text-align: right;
    padding: 0 8px;
    color: var(--dva-text-muted);
    background: rgba(0, 0, 0, 0.45);
    border-right: 1px solid rgba(255, 255, 255, 0.06);
    user-select: none;
    -webkit-user-select: none;
    font-size: 0.72rem;
    white-space: nowrap;
}

.diff-visualizer-app .diff-marker {
    text-align: center;
    padding: 0 4px;
    font-weight: 700;
    user-select: none;
    -webkit-user-select: none;
    font-size: 0.75rem;
}

.diff-visualizer-app .diff-code-cell {
    padding: 0 8px;
    white-space: pre;
    overflow-x: auto;
    text-overflow: clip;
    color: #e2e8f0;
}

/* Diff State Colors (Both Row-Level Descendant & Cell-Level Compound Selectors) */
.diff-visualizer-app .diff-row-equal {
    background: transparent;
}

.diff-visualizer-app .diff-row-del {
    background: rgba(239, 68, 68, 0.12);
}

.diff-visualizer-app .diff-row-del .diff-gutter,
.diff-visualizer-app .diff-gutter.diff-row-del {
    background: rgba(239, 68, 68, 0.2);
    color: #fca5a5;
}

.diff-visualizer-app .diff-row-del .diff-marker {
    color: var(--dva-ruby);
}

.diff-visualizer-app .diff-row-del .diff-code-cell,
.diff-visualizer-app .diff-code-cell.diff-row-del {
    background: rgba(239, 68, 68, 0.12);
    color: #fecaca;
}

.diff-visualizer-app .diff-row-add {
    background: rgba(16, 185, 129, 0.12);
}

.diff-visualizer-app .diff-row-add .diff-gutter,
.diff-visualizer-app .diff-gutter.diff-row-add {
    background: rgba(16, 185, 129, 0.2);
    color: #86efac;
}

.diff-visualizer-app .diff-row-add .diff-marker {
    color: var(--dva-emerald);
}

.diff-visualizer-app .diff-row-add .diff-code-cell,
.diff-visualizer-app .diff-code-cell.diff-row-add {
    background: rgba(16, 185, 129, 0.12);
    color: #d1fae5;
}

.diff-visualizer-app .diff-row-pad {
    background: rgba(0, 0, 0, 0.25);
}

.diff-visualizer-app .diff-row-pad .diff-gutter,
.diff-visualizer-app .diff-gutter.diff-row-pad {
    background: rgba(0, 0, 0, 0.35);
    color: transparent;
}

/* Intra-line character / word highlights */
.diff-visualizer-app .diff-del-inline {
    background: rgba(239, 68, 68, 0.42);
    color: #ffffff;
    border-radius: 3px;
    padding: 1px 2px;
    font-weight: 700;
}

.diff-visualizer-app .diff-add-inline {
    background: rgba(16, 185, 129, 0.4);
    color: #ffffff;
    border-radius: 3px;
    padding: 1px 2px;
    font-weight: 700;
}

/* Patch Modal / Pre-Formatted Code */
.diff-visualizer-app .diff-patch-area {
    display: none;
    padding: 1rem;
    background: #0d1117;
    color: #e5e7eb;
    font-family: var(--dva-font-mono);
    font-size: 0.8125rem;
    line-height: 1.6;
    max-height: 450px;
    overflow-y: auto;
    white-space: pre-wrap;
    word-break: break-all;
    border-top: 1px solid var(--dva-border);
}

.diff-visualizer-app .diff-patch-area.is-visible {
    display: block;
}

/* Sensitivity Table Glass Card */
.diff-visualizer-app .diff-table-card {
    padding: 0;
    overflow: hidden;
}

.diff-visualizer-app .diff-table-wrap {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.diff-visualizer-app .diff-benchmark-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.825rem;
    text-align: left;
    min-width: 650px;
}

.diff-visualizer-app .diff-benchmark-table caption {
    padding: 0.9rem 1.25rem;
    font-size: 0.875rem;
    font-weight: 700;
    color: #ffffff;
    text-align: left;
    background: rgba(0, 0, 0, 0.45);
    border-bottom: 1px solid var(--dva-border);
}

.diff-visualizer-app .diff-benchmark-table th {
    padding: 0.75rem 1.15rem;
    background: rgba(255, 255, 255, 0.03);
    color: var(--dva-text-muted);
    font-weight: 700;
    font-size: 0.725rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 1px solid var(--dva-border);
    white-space: nowrap;
}

.diff-visualizer-app .diff-benchmark-table td {
    padding: 0.85rem 1.15rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    color: #e5e7eb;
}

.diff-visualizer-app .diff-benchmark-table tr:last-child td {
    border-bottom: none;
}

.diff-visualizer-app .diff-benchmark-table tr.is-active-workload {
    background: rgba(247, 183, 51, 0.08);
    transition: background 0.3s ease;
}

.diff-visualizer-app .diff-benchmark-table tr.is-active-workload td:first-child {
    border-left: 3px solid var(--dva-gold);
    color: var(--dva-gold);
}

.diff-visualizer-app .diff-mono-td {
    font-family: var(--dva-font-mono);
    color: var(--dva-gold);
    font-weight: 700;
    white-space: nowrap;
}

/* Executive GEO Summary Glass Card */
.diff-visualizer-app .vantix-geo-summary {
    background: linear-gradient(135deg, rgba(6, 78, 59, 0.28) 0%, rgba(18, 22, 31, 0.92) 100%);
    border: 1px solid rgba(16, 185, 129, 0.38);
    border-radius: 18px;
    padding: 1.25rem 1.5rem;
    margin-bottom: 2rem;
    color: #e5e7eb;
    font-size: 0.95rem;
    line-height: 1.65;
    box-shadow: 0 8px 24px -4px rgba(0, 0, 0, 0.3);
}

.diff-visualizer-app .vantix-geo-summary strong {
    color: #ffffff;
    font-weight: 700;
}

/* Authority Article & Glass Card Section Architecture */
.diff-visualizer-app .diff-authority-article,
.diff-visualizer-app .diff-guide-article {
    width: 100%;
    max-width: 100%;
    margin: 0 0 2.5rem 0;
    color: #cbd5e1;
    font-size: 0.95rem;
    line-height: 1.75;
    box-sizing: border-box;
}

.diff-visualizer-app .diff-guide-section {
    background: var(--dva-bg-surface);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--dva-border);
    border-radius: 20px;
    padding: 2.25rem 2.5rem;
    box-shadow: 0 10px 30px -5px rgba(0, 0, 0, 0.35);
    margin-bottom: 1.75rem;
    width: 100%;
    box-sizing: border-box;
    min-width: 0;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.diff-visualizer-app .diff-guide-section:hover {
    border-color: var(--dva-border-hover);
    box-shadow: 0 14px 36px -6px rgba(0, 0, 0, 0.45);
}

.diff-visualizer-app .diff-guide-section h2,
.diff-visualizer-app .diff-authority-article h2 {
    font-size: 1.35rem;
    font-weight: 800;
    color: #ffffff;
    margin: 0 0 1.15rem 0;
    padding-bottom: 0.65rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    letter-spacing: -0.02em;
    line-height: 1.35;
}

.diff-visualizer-app .diff-guide-section h3,
.diff-visualizer-app .diff-authority-article h3 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--dva-gold);
    margin: 1.25rem 0 0.5rem 0;
    line-height: 1.4;
}

.diff-visualizer-app .diff-guide-section p,
.diff-visualizer-app .diff-authority-article p {
    margin: 0 0 1.15rem 0;
    color: #cbd5e1;
    font-size: 0.95rem;
    line-height: 1.75;
}

.diff-visualizer-app .diff-guide-section p:last-child {
    margin-bottom: 0;
}

.diff-visualizer-app .diff-guide-section ul,
.diff-visualizer-app .diff-guide-section ol,
.diff-visualizer-app .diff-authority-article ul,
.diff-visualizer-app .diff-authority-article ol {
    margin: 0 0 1.25rem 1.5rem;
    padding: 0;
    color: #cbd5e1;
    font-size: 0.95rem;
    line-height: 1.75;
}

.diff-visualizer-app .diff-guide-section li,
.diff-visualizer-app .diff-authority-article li {
    margin-bottom: 0.45rem;
}

.diff-visualizer-app .diff-guide-section a,
.diff-visualizer-app .diff-authority-article a {
    color: var(--dva-gold);
    text-decoration: underline;
    text-underline-offset: 2px;
    transition: color 0.15s ease;
}

.diff-visualizer-app .diff-guide-section a:hover,
.diff-visualizer-app .diff-authority-article a:hover {
    color: #ffffff;
}

/* Quick Jump Navigation TOC Glass Card */
.diff-visualizer-app .diff-toc-card {
    padding: 1.5rem 2rem;
    background: linear-gradient(135deg, rgba(15, 18, 26, 0.85) 0%, rgba(20, 24, 35, 0.75) 100%);
    border: 1px solid rgba(247, 183, 51, 0.22);
}

.diff-visualizer-app .diff-toc-title {
    font-size: 0.825rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--dva-gold);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.diff-visualizer-app .diff-toc-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.55rem 1.75rem;
    margin: 0;
    padding: 0;
    list-style: none;
}

.diff-visualizer-app .diff-toc-grid li a {
    font-size: 0.825rem;
    color: #94a3b8;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    transition: color 0.15s ease, transform 0.15s ease;
}

.diff-visualizer-app .diff-toc-grid li a:hover {
    color: var(--dva-gold);
    transform: translateX(2px);
}

.diff-visualizer-app .diff-authority-article code {
    font-family: var(--dva-font-mono);
    background: rgba(255, 255, 255, 0.08);
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
    font-size: 0.85em;
    color: #fde047;
}

.diff-visualizer-app .diff-authority-article pre {
    background: #0d1117;
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 12px;
    padding: 1rem 1.25rem;
    overflow-x: auto;
    margin: 1.25rem 0;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
    max-width: 100%;
    box-sizing: border-box;
}

.diff-visualizer-app .diff-authority-article pre code {
    background: transparent;
    padding: 0;
    color: #e5e7eb;
    font-size: 0.825rem;
}

/* Formula & Mathematical Proof Glass Cards */
.diff-visualizer-app .diff-formula-card {
    background: linear-gradient(135deg, rgba(15, 18, 26, 0.9) 0%, rgba(24, 28, 40, 0.85) 100%);
    border: 1px solid rgba(247, 183, 51, 0.28);
    border-left: 4px solid var(--dva-gold);
    border-radius: 14px;
    padding: 1.15rem 1.35rem;
    margin: 1.5rem 0;
    box-shadow: 0 8px 24px -6px rgba(0, 0, 0, 0.3);
}

.diff-visualizer-app .diff-formula-title {
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--dva-gold);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.45rem;
}

.diff-visualizer-app .diff-formula-code {
    font-family: var(--dva-font-mono);
    font-size: 0.85rem;
    color: #f8fafc;
    background: rgba(0, 0, 0, 0.4);
    padding: 0.65rem 0.95rem;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    overflow-x: auto;
    white-space: pre-wrap;
    word-break: break-all;
    line-height: 1.5;
}

/* Callout Glass Card */
.diff-visualizer-app .diff-callout-card {
    background: rgba(16, 185, 129, 0.07);
    border: 1px solid rgba(16, 185, 129, 0.28);
    border-left: 4px solid var(--dva-emerald);
    border-radius: 14px;
    padding: 1.15rem 1.35rem;
    margin: 1.5rem 0;
    box-shadow: 0 8px 24px -6px rgba(0, 0, 0, 0.25);
}

.diff-visualizer-app .diff-callout-title {
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--dva-emerald);
    margin-bottom: 0.4rem;
    display: flex;
    align-items: center;
    gap: 0.45rem;
}

/* Interactive FAQ Glass Accordions */
.diff-visualizer-app .diff-accordion-group {
    margin: 2.25rem 0 1.5rem 0;
}

.diff-visualizer-app .diff-accordion {
    margin-bottom: 0.75rem;
    border: 1px solid var(--dva-border);
    border-radius: 14px;
    background: var(--dva-bg-surface);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    overflow: hidden;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.diff-visualizer-app .diff-accordion:hover {
    border-color: var(--dva-border-hover);
}

.diff-visualizer-app .diff-accordion[open] {
    border-color: rgba(247, 183, 51, 0.35);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
}

.diff-visualizer-app .diff-accordion-summary {
    padding: 0.95rem 1.25rem;
    font-size: 0.925rem;
    font-weight: 700;
    color: #ffffff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    user-select: none;
    list-style: none;
    background: rgba(255, 255, 255, 0.02);
}

.diff-visualizer-app .diff-accordion-summary::-webkit-details-marker {
    display: none;
}

.diff-visualizer-app .diff-accordion-summary::after {
    content: '+';
    font-family: var(--dva-font-mono);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--dva-gold);
    transition: transform 0.2s ease;
}

.diff-visualizer-app .diff-accordion[open] .diff-accordion-summary::after {
    content: '−';
    color: var(--dva-gold);
}

.diff-visualizer-app .diff-accordion-content {
    padding: 1rem 1.25rem 1.25rem 1.25rem;
    font-size: 0.875rem;
    color: var(--dva-text-secondary);
    line-height: 1.65;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    background: rgba(10, 12, 16, 0.4);
}

/* Technical Definitions Card */
.diff-visualizer-app .vantix-aeo-definitions {
    background: var(--dva-bg-card);
    border: 1px solid var(--dva-border);
    border-radius: 18px;
    padding: 1.25rem 1.5rem;
    margin: 2rem 0;
    box-shadow: 0 8px 24px -6px rgba(0, 0, 0, 0.25);
}

.diff-visualizer-app .vantix-aeo-definitions dt {
    font-weight: 700;
    color: var(--dva-gold);
    font-size: 0.95rem;
    margin-top: 0.85rem;
}

.diff-visualizer-app .vantix-aeo-definitions dt:first-child {
    margin-top: 0;
}

.diff-visualizer-app .vantix-aeo-definitions dd {
    margin: 0.25rem 0 0.85rem 0;
    color: var(--dva-text-secondary);
    font-size: 0.875rem;
    line-height: 1.6;
}

/* Companion Tools Grid (2x2 Balanced Grid for 4 Companion Cards) */
.diff-visualizer-app .diff-companion-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
    margin-top: 2rem;
}

.diff-visualizer-app .diff-companion-card {
    background: var(--dva-bg-card);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border: 1px solid var(--dva-border);
    border-radius: 14px;
    padding: 1rem 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    text-decoration: none;
    transition: all 0.2s ease;
}

.diff-visualizer-app .diff-companion-card:hover {
    border-color: var(--dva-gold);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.diff-visualizer-app .diff-companion-badge {
    font-family: var(--dva-font-mono);
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--dva-gold);
}

.diff-visualizer-app .diff-companion-title {
    font-size: 0.9rem;
    font-weight: 700;
    color: #ffffff;
}

.diff-visualizer-app .diff-companion-desc {
    font-size: 0.775rem;
    color: var(--dva-text-secondary);
    line-height: 1.45;
}

/* Responsive Breakpoints & Anti-Collision Guards */
@media (max-width: 1024px) {
    .diff-visualizer-app .diff-workbench-grid {
        grid-template-columns: minmax(0, 1fr);
    }
    .diff-visualizer-app .diff-kpi-strip {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    .diff-visualizer-app .diff-kpi-item {
        border-right: none;
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        padding-bottom: 0.65rem;
    }
    .diff-visualizer-app .diff-kpi-item:nth-child(3),
    .diff-visualizer-app .diff-kpi-item:nth-child(4) {
        border-bottom: none;
        padding-bottom: 0;
    }
    .diff-visualizer-app .diff-companion-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 860px) {
    /* Degrade Split View to Unified on narrow viewports */
    .diff-visualizer-app .diff-table-split col.col-gutter { width: 35px; }
    .diff-visualizer-app .diff-table-split .diff-code-cell { font-size: 0.75rem; }
}

@media (max-width: 640px) {
    .diff-visualizer-app .diff-card {
        padding: 1rem;
        border-radius: 14px;
    }
    .diff-visualizer-app .diff-guide-section {
        padding: 1.35rem 1.15rem;
        border-radius: 16px;
        margin-bottom: 1.25rem;
    }
    .diff-visualizer-app .diff-toc-card {
        padding: 1.25rem 1rem;
    }
    .diff-visualizer-app .diff-toc-grid {
        grid-template-columns: minmax(0, 1fr);
        gap: 0.45rem;
    }
    .diff-visualizer-app .diff-kpi-strip {
        grid-template-columns: minmax(0, 1fr);
    }
    .diff-visualizer-app .diff-kpi-item {
        border-right: none;
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        padding: 0.5rem 0;
    }
    .diff-visualizer-app .diff-kpi-item:last-child {
        border-bottom: none;
    }
    .diff-visualizer-app .diff-title {
        font-size: 1.35rem;
    }
    .diff-visualizer-app .diff-controls-layout {
        flex-direction: column;
        align-items: flex-start;
    }
    .diff-visualizer-app .diff-companion-grid {
        grid-template-columns: minmax(0, 1fr);
    }
    .diff-visualizer-app .diff-header-top-row {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (max-width: 480px) {
    .diff-visualizer-app .diff-badge {
        white-space: normal;
        word-break: break-word;
    }
    .diff-visualizer-app .diff-action-toolbar,
    .diff-visualizer-app .diff-action-group {
        width: 100%;
        gap: 0.4rem;
    }
    .diff-visualizer-app .diff-action-toolbar .diff-btn-primary,
    .diff-visualizer-app .diff-action-toolbar .diff-btn-secondary,
    .diff-visualizer-app .diff-action-group .diff-btn {
        flex: 1 1 calc(50% - 0.4rem);
        justify-content: center;
    }
    .diff-visualizer-app .diff-sliders-strip {
        flex-direction: column;
        align-items: stretch;
        grid-template-columns: minmax(0, 1fr);
        gap: 0.75rem;
    }
    .diff-visualizer-app .diff-pill-group,
    .diff-visualizer-app .diff-preset-pills {
        width: 100%;
        overflow-x: auto;
        flex-wrap: nowrap;
        padding-bottom: 0.25rem;
        -webkit-overflow-scrolling: touch;
    }
    .diff-visualizer-app .diff-view-mode-tabs,
    .diff-visualizer-app .diff-segmented-control {
        width: 100%;
    }
    .diff-visualizer-app .diff-tab-btn,
    .diff-visualizer-app .diff-segmented-btn {
        flex: 1;
        text-align: center;
        justify-content: center;
        font-size: 0.725rem;
        padding: 0.35rem 0.45rem;
    }
}

/* WCAG 2.2 Keyboard Accessibility & High-Contrast Focus Indicators */
.diff-visualizer-app button:focus-visible,
.diff-visualizer-app .diff-btn:focus-visible,
.diff-visualizer-app .diff-btn-primary:focus-visible,
.diff-visualizer-app .diff-btn-secondary:focus-visible,
.diff-visualizer-app .diff-btn-xs:focus-visible,
.diff-visualizer-app .diff-pill-btn:focus-visible,
.diff-visualizer-app .diff-tab-btn:focus-visible,
.diff-visualizer-app .diff-textarea:focus-visible,
.diff-visualizer-app .diff-slider:focus-visible,
.diff-visualizer-app input[type="checkbox"]:focus-visible,
.diff-visualizer-app .diff-accordion-summary:focus-visible,
.diff-visualizer-app .diff-companion-card:focus-visible {
    outline: 2px solid var(--dva-gold);
    outline-offset: 2px;
}

/* ==========================================================================
   Light Mode Theme Adaptation & Anti-Glare Contrast Calibration
   Governed by html:not(.dark) or [data-theme="light"]
   Parity with Tool #50 (Developer Workstation Security Scanner)
   ========================================================================== */
html:not(.dark) .diff-visualizer-app,
[data-theme="light"] .diff-visualizer-app {
    --dva-bg-surface: rgba(255, 255, 255, 0.92);
    --dva-bg-surface-raised: rgba(0, 0, 0, 0.03);
    --dva-bg-card: rgba(248, 250, 252, 0.96);
    --dva-border: rgba(0, 0, 0, 0.12);
    --dva-border-hover: rgba(217, 119, 6, 0.45);
    --dva-gold: #b45309;
    --dva-gold-dim: rgba(217, 119, 6, 0.12);
    --dva-emerald: #059669;
    --dva-emerald-dark: #064e3b;
    --dva-emerald-dim: rgba(5, 150, 105, 0.12);
    --dva-cyan: #0284c7;
    --dva-cyan-dim: rgba(2, 132, 199, 0.12);
    --dva-amber: #d97706;
    --dva-ruby: #dc2626;
    --dva-ruby-dim: rgba(220, 38, 38, 0.12);
    --dva-text-primary: #0f172a;
    --dva-text-secondary: #475569;
    --dva-text-muted: #64748b;
    color: #0f172a;
}

html:not(.dark) .diff-visualizer-app .diff-card,
[data-theme="light"] .diff-visualizer-app .diff-card {
    background: var(--dva-bg-surface);
    border-color: var(--dva-border);
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.07), 0 8px 10px -6px rgba(0, 0, 0, 0.03);
}

html:not(.dark) .diff-visualizer-app .diff-card:hover,
[data-theme="light"] .diff-visualizer-app .diff-card:hover {
    border-color: var(--dva-border-hover);
}

html:not(.dark) .diff-visualizer-app .diff-title,
[data-theme="light"] .diff-visualizer-app .diff-title {
    color: #0f172a;
}

html:not(.dark) .diff-visualizer-app .diff-subtitle,
[data-theme="light"] .diff-visualizer-app .diff-subtitle {
    color: #475569;
}

html:not(.dark) .diff-visualizer-app .diff-badge,
[data-theme="light"] .diff-visualizer-app .diff-badge {
    border: 1px solid currentColor;
}

html:not(.dark) .diff-visualizer-app .diff-pulse-dot,
[data-theme="light"] .diff-visualizer-app .diff-pulse-dot {
    background: #059669;
    box-shadow: 0 0 0 0 rgba(5, 150, 105, 0.7);
}

/* KPI Ribbon Card */
html:not(.dark) .diff-visualizer-app .diff-kpi-ribbon-card,
[data-theme="light"] .diff-visualizer-app .diff-kpi-ribbon-card {
    background: linear-gradient(135deg, rgba(254, 243, 199, 0.7) 0%, rgba(255, 255, 255, 0.95) 100%);
    border-color: rgba(217, 119, 6, 0.25);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04);
}

html:not(.dark) .diff-visualizer-app .diff-kpi-item,
[data-theme="light"] .diff-visualizer-app .diff-kpi-item {
    border-right-color: rgba(0, 0, 0, 0.08);
    border-bottom-color: rgba(0, 0, 0, 0.08);
}

html:not(.dark) .diff-visualizer-app .diff-kpi-val,
[data-theme="light"] .diff-visualizer-app .diff-kpi-val {
    color: #0f172a;
}

html:not(.dark) .diff-visualizer-app .diff-kpi-label,
[data-theme="light"] .diff-visualizer-app .diff-kpi-label {
    color: #64748b;
}

html:not(.dark) .diff-visualizer-app .diff-kpi-sub,
[data-theme="light"] .diff-visualizer-app .diff-kpi-sub {
    color: #475569;
}

/* Controls, Pills, Tabs & Dropdowns */
html:not(.dark) .diff-visualizer-app .diff-group-label,
[data-theme="light"] .diff-visualizer-app .diff-group-label {
    color: #475569;
}

html:not(.dark) .diff-visualizer-app .diff-pill-btn,
[data-theme="light"] .diff-visualizer-app .diff-pill-btn {
    background: #ffffff;
    border-color: rgba(0, 0, 0, 0.14);
    color: #334155;
}

html:not(.dark) .diff-visualizer-app .diff-pill-btn:hover,
[data-theme="light"] .diff-visualizer-app .diff-pill-btn:hover {
    background: #f1f5f9;
    color: #0f172a;
    border-color: rgba(0, 0, 0, 0.22);
}

html:not(.dark) .diff-visualizer-app .diff-pill-btn.is-active,
[data-theme="light"] .diff-visualizer-app .diff-pill-btn.is-active {
    background: linear-gradient(135deg, #d97706, #b45309);
    color: #ffffff;
    border-color: #b45309;
    box-shadow: 0 2px 8px rgba(180, 83, 9, 0.25);
}

html:not(.dark) .diff-visualizer-app .diff-tab-btn,
[data-theme="light"] .diff-visualizer-app .diff-tab-btn {
    background: #ffffff;
    color: #334155;
    border-color: rgba(0, 0, 0, 0.12);
}

html:not(.dark) .diff-visualizer-app .diff-tab-btn.is-active,
[data-theme="light"] .diff-visualizer-app .diff-tab-btn.is-active {
    background: linear-gradient(135deg, #d97706, #b45309);
    color: #ffffff;
    border-color: #b45309;
}

html:not(.dark) .diff-visualizer-app .diff-segmented-btn,
[data-theme="light"] .diff-visualizer-app .diff-segmented-btn {
    background: transparent;
    color: #334155;
}

html:not(.dark) .diff-visualizer-app .diff-segmented-btn.is-active,
[data-theme="light"] .diff-visualizer-app .diff-segmented-btn.is-active {
    background: #ffffff;
    color: #0f172a;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

html:not(.dark) .diff-visualizer-app .diff-segmented-control,
[data-theme="light"] .diff-visualizer-app .diff-segmented-control {
    background: #f1f5f9;
    border-color: rgba(0, 0, 0, 0.1);
}

html:not(.dark) .diff-visualizer-app .diff-select,
[data-theme="light"] .diff-visualizer-app .diff-select {
    background: #ffffff;
    color: #0f172a;
    border-color: rgba(0, 0, 0, 0.18);
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.04);
}

html:not(.dark) .diff-visualizer-app .diff-select:focus,
[data-theme="light"] .diff-visualizer-app .diff-select:focus {
    border-color: #b45309;
    outline: none;
    box-shadow: 0 0 0 2px rgba(180, 83, 9, 0.15);
}

html:not(.dark) .diff-visualizer-app .diff-toggle-wrapper,
[data-theme="light"] .diff-visualizer-app .diff-toggle-wrapper {
    color: #334155;
}

/* Action Toolbar Buttons */
html:not(.dark) .diff-visualizer-app .diff-btn-secondary,
html:not(.dark) .diff-visualizer-app .diff-btn-xs,
[data-theme="light"] .diff-visualizer-app .diff-btn-secondary,
[data-theme="light"] .diff-visualizer-app .diff-btn-xs {
    background: #ffffff;
    color: #0f172a;
    border-color: rgba(0, 0, 0, 0.15);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

html:not(.dark) .diff-visualizer-app .diff-btn-secondary:hover,
html:not(.dark) .diff-visualizer-app .diff-btn-xs:hover,
[data-theme="light"] .diff-visualizer-app .diff-btn-secondary:hover,
[data-theme="light"] .diff-visualizer-app .diff-btn-xs:hover {
    background: #f8fafc;
    border-color: #b45309;
    color: #b45309;
}

html:not(.dark) .diff-visualizer-app .diff-btn-primary,
html:not(.dark) .diff-visualizer-app .diff-btn-gold,
[data-theme="light"] .diff-visualizer-app .diff-btn-primary,
[data-theme="light"] .diff-visualizer-app .diff-btn-gold {
    background: linear-gradient(135deg, #d97706, #b45309);
    color: #ffffff;
    border-color: #b45309;
    box-shadow: 0 2px 8px rgba(180, 83, 9, 0.25);
}

html:not(.dark) .diff-visualizer-app .diff-btn-primary:hover,
html:not(.dark) .diff-visualizer-app .diff-btn-gold:hover,
[data-theme="light"] .diff-visualizer-app .diff-btn-primary:hover,
[data-theme="light"] .diff-visualizer-app .diff-btn-gold:hover {
    background: linear-gradient(135deg, #b45309, #92400e);
    color: #ffffff;
    box-shadow: 0 4px 12px rgba(180, 83, 9, 0.35);
}

/* Editor & Viewer Cards */
html:not(.dark) .diff-visualizer-app .diff-editor-card,
html:not(.dark) .diff-visualizer-app .diff-viewer-card,
[data-theme="light"] .diff-visualizer-app .diff-editor-card,
[data-theme="light"] .diff-visualizer-app .diff-viewer-card {
    background: #ffffff;
    border-color: rgba(0, 0, 0, 0.12);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
}

html:not(.dark) .diff-visualizer-app .diff-editor-header,
html:not(.dark) .diff-visualizer-app .diff-viewer-header,
[data-theme="light"] .diff-visualizer-app .diff-editor-header,
[data-theme="light"] .diff-visualizer-app .diff-viewer-header {
    background: #f1f5f9;
    border-bottom-color: rgba(0, 0, 0, 0.1);
}

html:not(.dark) .diff-visualizer-app .diff-editor-title,
html:not(.dark) .diff-visualizer-app .diff-viewer-title,
[data-theme="light"] .diff-visualizer-app .diff-editor-title,
[data-theme="light"] .diff-visualizer-app .diff-viewer-title {
    color: #0f172a;
}

html:not(.dark) .diff-visualizer-app .diff-editor-body,
html:not(.dark) .diff-visualizer-app .diff-viewer-body,
[data-theme="light"] .diff-visualizer-app .diff-editor-body,
[data-theme="light"] .diff-visualizer-app .diff-viewer-body {
    background: #ffffff;
}

html:not(.dark) .diff-visualizer-app .diff-textarea,
[data-theme="light"] .diff-visualizer-app .diff-textarea {
    background: #ffffff;
    color: #0f172a;
}

html:not(.dark) .diff-visualizer-app .diff-editor-footer,
[data-theme="light"] .diff-visualizer-app .diff-editor-footer {
    background: #f1f5f9;
    border-top-color: rgba(0, 0, 0, 0.08);
    color: #475569;
}

/* Diff Rendering Rows & Syntax Highlight Lines */
html:not(.dark) .diff-visualizer-app .diff-line-added,
[data-theme="light"] .diff-visualizer-app .diff-line-added {
    background: rgba(16, 185, 129, 0.12);
    color: #064e3b;
}

html:not(.dark) .diff-visualizer-app .diff-line-deleted,
[data-theme="light"] .diff-visualizer-app .diff-line-deleted {
    background: rgba(239, 68, 68, 0.12);
    color: #991b1b;
}

html:not(.dark) .diff-visualizer-app .diff-line-context,
[data-theme="light"] .diff-visualizer-app .diff-line-context {
    color: #334155;
    background: #ffffff;
}

html:not(.dark) .diff-visualizer-app .diff-line-num,
[data-theme="light"] .diff-visualizer-app .diff-line-num {
    color: #94a3b8;
    background: #f8fafc;
    border-right-color: rgba(0, 0, 0, 0.08);
}

html:not(.dark) .diff-visualizer-app .diff-char-added,
[data-theme="light"] .diff-visualizer-app .diff-char-added {
    background: rgba(16, 185, 129, 0.28);
    color: #064e3b;
}

html:not(.dark) .diff-visualizer-app .diff-char-deleted,
[data-theme="light"] .diff-visualizer-app .diff-char-deleted {
    background: rgba(239, 68, 68, 0.28);
    color: #991b1b;
}

/* Callout & Formula Cards */
html:not(.dark) .diff-visualizer-app .diff-callout-card,
[data-theme="light"] .diff-visualizer-app .diff-callout-card {
    background: #ecfdf5;
    border-color: #a7f3d0;
    border-left: 4px solid #059669;
    color: #064e3b;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
}

html:not(.dark) .diff-visualizer-app .diff-callout-card p,
[data-theme="light"] .diff-visualizer-app .diff-callout-card p {
    color: #064e3b !important;
}

html:not(.dark) .diff-visualizer-app .diff-callout-title,
[data-theme="light"] .diff-visualizer-app .diff-callout-title {
    color: #059669;
}

html:not(.dark) .diff-visualizer-app .diff-formula-card,
[data-theme="light"] .diff-visualizer-app .diff-formula-card {
    background: #f8fafc;
    border-color: rgba(0, 0, 0, 0.1);
    border-left: 4px solid #b45309;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
}

html:not(.dark) .diff-visualizer-app .diff-formula-title,
[data-theme="light"] .diff-visualizer-app .diff-formula-title {
    color: #b45309;
}

html:not(.dark) .diff-visualizer-app .diff-formula-code,
[data-theme="light"] .diff-visualizer-app .diff-formula-code {
    background: #f1f5f9;
    color: #0f172a;
    border-color: rgba(0, 0, 0, 0.08);
}

/* Accordions */
html:not(.dark) .diff-visualizer-app .diff-accordion,
[data-theme="light"] .diff-visualizer-app .diff-accordion {
    background: #ffffff;
    border-color: rgba(0, 0, 0, 0.12);
}

html:not(.dark) .diff-visualizer-app .diff-accordion:hover,
[data-theme="light"] .diff-visualizer-app .diff-accordion:hover {
    border-color: rgba(180, 83, 9, 0.4);
}

html:not(.dark) .diff-visualizer-app .diff-accordion[open],
[data-theme="light"] .diff-visualizer-app .diff-accordion[open] {
    border-color: #b45309;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
}

html:not(.dark) .diff-visualizer-app .diff-accordion-summary,
[data-theme="light"] .diff-visualizer-app .diff-accordion-summary {
    background: #f8fafc;
    color: #0f172a;
}

html:not(.dark) .diff-visualizer-app .diff-accordion-summary::after,
[data-theme="light"] .diff-visualizer-app .diff-accordion-summary::after {
    color: #b45309;
}

html:not(.dark) .diff-visualizer-app .diff-accordion-content,
[data-theme="light"] .diff-visualizer-app .diff-accordion-content {
    background: #ffffff;
    color: #334155;
    border-top-color: rgba(0, 0, 0, 0.08);
}

/* Companion Tools Grid */
html:not(.dark) .diff-visualizer-app .diff-companion-card,
[data-theme="light"] .diff-visualizer-app .diff-companion-card {
    background: #ffffff;
    border-color: rgba(0, 0, 0, 0.12);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
}

html:not(.dark) .diff-visualizer-app .diff-companion-card:hover,
[data-theme="light"] .diff-visualizer-app .diff-companion-card:hover {
    border-color: #b45309;
    box-shadow: 0 8px 24px rgba(180, 83, 9, 0.15);
}

html:not(.dark) .diff-visualizer-app .diff-companion-title,
[data-theme="light"] .diff-visualizer-app .diff-companion-title {
    color: #0f172a;
}

html:not(.dark) .diff-visualizer-app .diff-companion-desc,
[data-theme="light"] .diff-visualizer-app .diff-companion-desc {
    color: #475569;
}

html:not(.dark) .diff-visualizer-app .diff-companion-badge,
[data-theme="light"] .diff-visualizer-app .diff-companion-badge {
    color: #b45309;
}

html:not(.dark) .diff-visualizer-app .diff-companion-header-title,
[data-theme="light"] .diff-visualizer-app .diff-companion-header-title {
    color: #0f172a;
}

/* Executive GEO Summary */
html:not(.dark) .diff-visualizer-app .vantix-geo-summary,
[data-theme="light"] .diff-visualizer-app .vantix-geo-summary {
    background: linear-gradient(135deg, rgba(236, 253, 245, 0.95) 0%, rgba(209, 250, 229, 0.6) 100%);
    border-color: rgba(5, 150, 105, 0.35);
    color: #064e3b;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04);
}

html:not(.dark) .diff-visualizer-app .vantix-geo-summary strong,
[data-theme="light"] .diff-visualizer-app .vantix-geo-summary strong {
    color: #064e3b;
}

/* Authority Article & Editorial Typography */
html:not(.dark) .diff-visualizer-app .diff-authority-article,
[data-theme="light"] .diff-visualizer-app .diff-authority-article {
    color: #334155;
}

html:not(.dark) .diff-visualizer-app .diff-authority-article h2,
[data-theme="light"] .diff-visualizer-app .diff-authority-article h2 {
    color: #0f172a;
    border-bottom-color: rgba(0, 0, 0, 0.1);
}

html:not(.dark) .diff-visualizer-app .diff-authority-article h3,
[data-theme="light"] .diff-visualizer-app .diff-authority-article h3 {
    color: #b45309;
}

html:not(.dark) .diff-visualizer-app .diff-authority-article p,
html:not(.dark) .diff-visualizer-app .diff-authority-article li,
[data-theme="light"] .diff-visualizer-app .diff-authority-article p,
[data-theme="light"] .diff-visualizer-app .diff-authority-article li {
    color: #334155;
}

html:not(.dark) .diff-visualizer-app .diff-authority-article a,
[data-theme="light"] .diff-visualizer-app .diff-authority-article a {
    color: #b45309;
}

html:not(.dark) .diff-visualizer-app .diff-authority-article a:hover,
[data-theme="light"] .diff-visualizer-app .diff-authority-article a:hover {
    color: #0f172a;
}

html:not(.dark) .diff-visualizer-app .diff-authority-article code,
[data-theme="light"] .diff-visualizer-app .diff-authority-article code {
    background: #f1f5f9;
    color: #b45309;
    border: 1px solid rgba(0, 0, 0, 0.08);
}

html:not(.dark) .diff-visualizer-app .diff-authority-article pre,
[data-theme="light"] .diff-visualizer-app .diff-authority-article pre {
    background: #f8fafc;
    border-color: rgba(0, 0, 0, 0.12);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

html:not(.dark) .diff-visualizer-app .diff-authority-article pre code,
[data-theme="light"] .diff-visualizer-app .diff-authority-article pre code {
    background: transparent;
    color: #0f172a;
    border: none;
}

html:not(.dark) .diff-visualizer-app .diff-toc-grid li a,
[data-theme="light"] .diff-visualizer-app .diff-toc-grid li a {
    color: #475569;
}

html:not(.dark) .diff-visualizer-app .diff-toc-grid li a:hover,
[data-theme="light"] .diff-visualizer-app .diff-toc-grid li a:hover {
    color: #b45309;
}